In the chapter "Turnabout Serenade", inside the Gavinners's dressing room are two references to the UK rock band "The Police". Examining the poster with the police officer on it will trigger a conversation about a band called The Police, and examining the red light on the ceiling will have Trucy talking about turning it on, with Apollo responding with "Don't turn on the red light", referencing the chorus to The Police's hit song, Roxanne.

In case three "Turnabout Serenade", on day 2 in the Wright Anything Agency if you examine the top hat, Apollo will say "That's one of those hats you pull things out of, right?". Trucy will then say "Of course! My hat's like a little universe! Bigger on the inside than on the outside!" which Apollo will reply saying "Hmm... That reminds me of a sci-fi show I used to watch."

This is a reference to the science fiction series Doctor Who and the spaceship the TARDIS which is bigger on the inside than on the outside.